This aquarium gravel cleaner is designed to deal with small gravel and change water of fish tank. Adjustable tube fits for large and small aquariums. Battery powered cleaner is easy to operate, press the button on the top, the water in the aquarium will automatically be pumped to change water through a hose. It also can remove the dirt, residue from the bottom of aquarium to keep ahealthy environment of fish, turtle and other creatures.Features:Wash gravel, siphon the fish excrement and other debris by the filter mesh bag, then thewater will permeate from the bag and flow into tank, also can drain out water through outlet pipe. Comes with a water inlet tube and two extension tubes, so user can adjust the height according to fish tank size or the water level. The cleaning head with inner mesh reduces suction and prevents water plants or small fish from being sucked up with water. Powered by 2pcs "C" type batteries, with switch button to control on / off. Top handle part can be hung on the rim of fish tank, the cleaner helps to free your hands and washthe tank effortlessly. The product is equipped with gauze filter bag and water pipe. When filtering, it can be filtered in the fish tank, the dirty things are filtered through the filter bag, and the water returns to the fish tank through the filter bag, or you can choose to use the water pipe to directly lead the water to the In the bucket outside the fish tank. The product uses dry batteries (No. 2 dry battery), which is safe and convenient (without batteries in the product). The top hook can be rotated, which is convenient for rotating the sand washer in the water, which is not a function of ordinary filters.Specifications:Condition: 100% Brand NewMaterial: PlasticColor: as Shown in the PicturePower Supply: 2 x 1.5V C Type Batteries(Not included)Water Outlet Pipe Length: approx. 67cm / 26.38inWater Inlet Tube Length(3pcs): approx. 18cm / 7.09in, 20cm / 7.87in, 40cm /15.75inTotal Length: Minimum 58cm / 22.83in, 72cm / 28.35in, Maximum 95cm / 37.40in (Adjustable)Normal Water Level: 30cmMaximum Water Level: 72cmMaximumFlow: 520L/HWeight: approx. 373gPackage Included:1 x Gravel Cleaner Main Body(battery not included)3 x Water Inlet Tubes1 x Water Outlet Pipe1 x Filter Mesh Bag1 x Cleaning Head1 x Cleaning BrushNote:1. Please allow 0-2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one